Examine source code of Bloxta

{
  "manifest_version": 2,
  "name": "Bloxta",
  "version": "1.5",
  "description": "A productivity add-on that blocks distracting websites during scheduled hours",
  "icons": {
    "48": "icons/bloxta-48.png",
    "96": "icons/bloxta-96.png"
  },
  "permissions": [
    "bookmarks",
    "tabs",
    "storage",
    "alarms",
    "webNavigation",
    "*://*/*"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/bloxta-16.png",
      "32": "icons/bloxta-32.png"
    },
    "default_title": "Bloxta",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2049e10d-151c-4167-94d0-594456c839cc}"
    }
  }
}